p h y ite



J. PHYFE.

Bleaching lvoy.

Patented Oct. 28', '1856.

,UNITED sTATEs PATENT oEEioE.

JNO. PHYFE, OF NEIV YORK, N. Y.

IVORY-BLEACHING- APPARATUS.

Specification of Letters Patent No. 15,983, dated October 28, 1856.

V ivory upon a glass table or bed which is exposed to the direct rays ofthe sun and has a reflector below it to reectback again the lightpassing through the ivory and through the table or bed and therebyeffect the bleaching of the under surface and lower part of the ivory byreflected light, by that means obviating to a great extent the necessityof turning over the pieces of ivory dur-` ing the bleaching process.

To enable others to make and use my invention I will proceed to describethe apparatus .shown in the drawing by which it is performed andthemanner in which it is conducted.

A is a fiat glass table tted to a frame F, and supported in a horizontalor nearly horizontal position on standards a, a.

B, is the reiector made of silvered glass or metal supported on the samestandards a, a, some distance below the table. This reflector may bearranged parallel with or at any suitable angle to the table A. Thespace between the table and the reiector is inclosed by glass b, b,so asto protect the reiector from dust and moisture and prevent itsbrightness being impaired. These side walls b, b, may be of clear glassor may be reflectors.

C D E is a cover composed of a frame C, so constructed as to hold aninclined plate of glass D, or a sash filled with panes of glass, andside lights E, E, said cover being hinged to the frame F, at cl, andclosing down upon the said frame in such a manner as to exclude air`from `the ivory placed on the table A, excepting of course the air thatis inclosed within the cover.

The above described apparatus is placed on the roof of a building orunder a glass roof or skylight or in any place where the table A isexposed to the direct rays of the sun. The pieces of ivory to bebleached are placed upon the table A, while the cover is raised asindicated in red outline in the drawing, and may cover the whole surfaceof the table, and the cover is then shut down. The rays of the sun beingthen admitted through the cover to the ivory pass through the ivory andthrough the glass table to the reflector B by which they are thrown backagain through the glass table and the ivory.

I do not claim the exclusion of t-he air from the ivory during thebleaching process, and I do not confine myself to the construction ofthe apparatus in such` a manner as to exclude the air during theprocess, or to any particular construction of the apparatus; but

What I cla-im as my invention and `desire to secure by Letters Patent isThe bleaching of ivory by exposure to the rays of the sun on a glasstable with a reiector below it substantially as herein described.

JOHN PHYFE. Witnesses: i

W. TUsoH, JAMES F. BUGKLEY.

